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Comment spécifier plusieurs domaines inclus dans un enregistrement SPF?

ayi

Our business email is hosted on Google apps. In addition, our web server may also send email. Currently our SPF record in DNS looks like this:
<pre><code class="lang-auto">domain.com. IN TXT "v=spf1 a include:_spf.google.com -all"

</code></pre>
This is all fine, however now we’ve outsourced our email list management to another company and we need to include a second domain with <code>include</code>. So, I’m looking for something like:
<pre><code class="lang-auto">domain.com. IN TXT "v=spf1 a include:_spf.google.com include:otherdomain.com -all"

</code></pre>
What is the correct syntax for this? 
Many thanks!
<hr>
Source : <a href="https://www.spf-record.com/syntax" rel="noopener nofollow ugc"></a>

ayi_2

All SPF mechanisms, including <code>include</code>, can be used multiple times, separated by spaces:
<pre><code class="lang-auto">"v=spf1 include:_spf.google.com include:otherdomain.com -all"

</code></pre>
Evaluation of <code>include</code> works this way:
<ul>
<li></li>
</ul>
If the included data returned PASS, then the <code>include</code> itself generates a result (for example, <code>include:foo.bar</code> generates a PASS, but <code>-include:foo.bar</code> generates a FAIL).
<ul>
<li></li>
</ul>
If the included data returned FAIL or NEUTRAL, then the <code>include</code> does not contribute to the result at all, and processing goes to your next mechanism.
See <a href="https://www.spf-record.com/syntax">SPF record syntax</a> and <a href="https://www.rfc-editor.org/rfc/rfc7208">RFC 7208</a>.
(Note that <code>redirect=</code> is not a mechanism but a global modifier, and cannot be repeated this way.)